13033240021 has 2 divisors, whose sum is σ = 13033240022. Its totient is φ = 13033240020.

The previous prime is 13033239983. The next prime is 13033240027. The reversal of 13033240021 is 12004233031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10123176996 + 2910063025 = 100614^2 + 53945^2 .

It is a cyclic number.

It is not a de Polignac number, because 13033240021 - 2²¹ = 13031142869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13033240027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6516620010 + 6516620011.

It is an arithmetic number, because the mean of its divisors is an integer number (6516620011).

Almost surely, 2^13033240021 is an apocalyptic number.

It is an amenable number.

13033240021 is a deficient number, since it is larger than the sum of its proper divisors (1).

13033240021 is an equidigital number, since it uses as much as digits as its factorization.

13033240021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 13033240021 its reverse (12004233031), we get a palindrome (25037473052).

The spelling of 13033240021 in words is "thirteen billion, thirty-three million, two hundred forty thousand, twenty-one".